XML 96 R52.htm IDEA: XBRL DOCUMENT v3.20.1
Financial instruments, Categories of financial instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Financial assets [Abstract]        
Cash and cash equivalents $ 67,356 [1],[2] $ 94,944 [1],[2] $ 77,292 $ 109,295
Accounts receivable and accrued revenues [1] 107,848 60,196    
Total 175,204 155,140    
Financial liabilities [Abstract]        
Accounts payable and accrued expenses [1] 23,998 28,634    
Derivative financial liabilities, current [3] 4,320 1,250    
Current portion long-term debt [1] 100,385 93,815    
Long-term debt [1] 750,586 873,460    
Derivative financial liabilities, non-current [3] 11,279 4,486    
Total financial liabilities 890,569 1,001,645    
Restricted cash $ 221 $ 638    
[1] Amortized cost.
[2] Cash and cash equivalents include $221 thousand in restricted cash in 2019 and $638 thousand in 2018, including employee withholding tax.
[3] Fair value through profit or loss.